Practical and Safe Needle Biopsy Device

Abstract

The invention relates to incision biopsy of the tissue that is collected in the tissue aspiration reservoir (19) that is administered by forward motion of the cutting inner edge (21), after the aspiration of the fluid material into the inner needle inlet (22) and the conveying space (23), and from there into the outlet (27) and the hollow of injection syringe (17) as a result of the vacuum that is created by opening of the notch (13) at the tip of the outer needle (10), with backward motion of the cutting inner needle (20) that is connected with the moveable piston that is positioned in the hollow (11) of the outer needle (10) that is connected with the said injection syringe body (16).

Description

TECHNICAL FIELD[0001]The invention relates to biopsy needles which enable to take soft pieces of tissue and / or cystic fluids, tissue aspirates, and blood materials from the organs in the human body for determining the reasons of anomalous nodules or masses (tumors) in the human body, and act as a medical invasive test procedure.[0002]Through a method that is safe, simple, and far more easier to use, as if simply administering injection, the said invention can provide possibility of administering closed biopsy to intraabdominal organs / masses that are appropriate for closed biopsy or all kinds of tissues that contain such lesions as LAP; particularly thyroid, breast, lymph node, cystic lesion, and cutaneous / subcutaneous lesions; to every medical doctor who has injection experience.[0003]When internal organ biopsy is being administered, having the patient hold his / her breath and continue this retention throughout the duration of biopsy is very important for prevention of complications....

AI Technical Summary

Benefits of technology

[0019]Advantage of the invention is that it provides a simple and easy-to-use new biopsy method, which is safer and administered as if it is a regular medicine injection, without necessity of receiving a special education for injection biopsy method, as distinct from negative situations in the above mentioned tru-cut biopsy method.

[0020]Another advantage of the invention is that it enables aiming once at the target tissue and taking sufficient amount of tissue piece from the target tissue.

[0021]Another purpose of the invention is to allow its use for cystic lesions, because, due to existence of hollow channel at one edge of the inner needle, it can be used in aspiration of the fluid inside the cyst if the target tissue is cystic, that is, if it is a fluid-containing structure. With this property, it provides an advantage in taking of biopsy from cystic nodules that are frequently observed, particularly, in goiter patients.

[0022]Another purpose of the invention is that due to its being single incision biopsy that also allow thin needle aspiration system, it provides opportunity to know that the needle is in intravenous position, which is an unwanted complication of the target tissue that is reached during the biopsy procedure. In such a situation where the needle is in intravenous position, such a possibility of complication that increase the risk of haemorrhage will be known before making an incision, because blood will enter into the syringe during the action of pulling back the piston, which is the move that takes place before the incision manoeuvre, and the risk of haemorrhage, which is the most feared aspect of closed biopsy method, will be reduced.

[0023]From the viewpoint of reducing the risk of haemorrhage, another advantage of the invention is, due to entry of arterial blood into the injection syringe with pressure, in a flushing manner, particularly when the needle is in intravenous position prior to the biopsy, it is known that the needle is in intravenous position before making the incision; and reduction of the risk of heavy-fatal arterial haemorrhage, which is most feared complication in biopsies.

[0024]Another purpose of the invention is reduction of reports of insufficient material in pathological examination reports, due to the invention's being a combined higher technique that can be also used in taking incision biopsy together with the TNAB method, when it is used instead of the TNAB, particularly in such lesions as thyroid and lymph nodes, nodular, etc. where the biopsy is administered with the TNAB.

Problems solved by technology

Due to its requirement of surgical procedure, it is not useful and practical, and it is a highly invasive procedure.

Cases where sufficient piece of tissue cannot be taken with the TNAB method and faulty negative results are substantially frequent.

On the other hand, in the patent application JP2007054449A, outer lumen is rotated with a rope style material connected to the needle, and material is taken with the tip of the needle; it seems to be a rudimentary and ineffective method.

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